Roberts Gorden Complete Specifications for 4.5m BTU Heater Installation and Operation

14.3 Suspension Specifications

Hang heater with materials with a minimum working load of 75 lbs (33 kg). See Page 14, Figure 14.

14.4 Controls Specifications

Time switches, thermostats, etc. can be wired into the electrical supply. External controls supplied as an optional extra.

BH-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

SECTION 14: GENERAL SPECIFICATIONS

14.1 Material Specifications

14.1.1 Reflectors

.024 Aluminum

(Optional .024 Stainless Steel Type 304)

14.2 Heater Specifications

14.2.1 Ignition

Fully automatic spark ignition with safety shut-off.

General Specifications for BH-Series heaters are as follows:

End View	Side View		Reflector
12.5"					Turbulator (select models)
(32 cm)
12.5"			Burner Tube	Minimum Length A
	11"
(32 cm)
	(28 cm)
	Heat Input Rate	Length “A”		Recommended
				Minimum Mounting Height*
Model	(Btu/h) x (1000)	Minimum		Space	Spot
BH-40	40	10' (3 m)		8-10' (2.4 - 3 m)	8'(2.4 m)
BH-60	60	20' (6 m)		10-12' (3 - 3.6 m)	9' (2.7 m)
BH-80	80	20' (6 m)		12-15' (3.6 - 4.5 m)	11'	(3.3 m)
BH-100	100	30' (9 m)		12-15' (3.6 - 4.5 m)	12'	(3.7 m)
BH-115	115	30' (9 m)		15-20' (4.5 - 6 m)	15'	(4.6 m)
BH-125	125	40'	(12 m)	15-20' (4.5 - 6 m)	15'	(4.6 m)
BH-140	140	40'	(12 m)	20-25' (6 - 7.6 m)	20'	(6.1 m)
BH-150	150	50'	(15 m)	20-25' (6 - 7.6 m)	20'	(6.1 m)
BH-175	175	50'	(15 m)	25' (7.6 m)	23' (7 m)
BH-200	200	60'	(18 m)	25' (7.6 m)	25'	(7.6 m)

*See Page 4, Section 3 for clearances to combustibles.

GAS PRESSURE AT MANIFOLD:

Natural Gas:	3.5" wc
LP Gas:	10.5" wc

PIPE CONNECTION:

1/2" NPT (for BH-40, 60, 80, 100, 115 & 125) 3/4" NPT (for BH- 140, 150,175 & 200)

DIMENSIONS:

Vent Connection Size: 4" (10 cm)

Outside Air Connection Size: 4" (10 cm)

Refer to figure above for dimensional information.

GAS INLET PRESSURE:
Natural Gas:
for BH-40, 60, 80, 100,
115, 125, 140, 150	4.6" wc Minimum
for BH-175, 200	5.0" wc	Minimum
	14.0" wc	Maximum
LP Gas:	11.0" wc	Minimum
	14.0" wc Maximum

ELECTRICAL RATING (ALL MODELS):

120 V - 60 Hz, 1 A

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